In pictures: Occupy Wall Street's first weeks

The protest occupation near the United States' financial centre is nearing three weeks of action.

The protest, "more multi-faceted than a single campaign", according to one organiser, Elliot Tarver, has gone viral on Twitter, Facebook and has spread to at least 70 other US cities.

It has included daily marches and other forms of protest, organising meetings, close to 800 arrests and the creation of what Occupy Wall Street protester Jesse Alexander Meyerson calls "not only a political protest, but also a model society".